With nations, you're able to conquer other countries, dominate over regions, produce Money, resources, a military force, and play the game. This doctrine concerns all of the land units and this is what makes it an universal one. It harmonizes well with Grand battleplan and Superior firepower of land doctrines.

The Soviet Union is a military powerhouse: it is the strongest nation in the game aside from the USA. Romania had 26 infantry, 11 mountain, and 5 armored divisions to confront the Soviets. superior firepower and mobile warfare are so much better, and i even shift to superior firepower when playing china. When Germany attacks the Soviet Union, do not join the war and wait until Germany forces the Soviet Union to 80% surrender progress, then take the decision, thus earning you the second Georgia. however, i would never use grand battle plan or mass assault with the major powers, not even uk or soviet. What the doctrines are good for: Which land doctrine you pick depends on your plan of divisions, usually independent of country (unless you get specific research bonuses for specific doctrines in your focus tree, like Germany's Battlefield Support air doctrine).

The Soviet Union is without doubt the largest nation in the game. To level the playing field you should focus on other aspects of the military power and build powerful air forces. Land doctrines for Soviet Union Discussion We know that Soviets start with Mass Asault land doctrine in 1936, which is sort of historical, since it's Deep Battle subbranch best represents Soviet tactics in WW2.

Hoi4 mobile warfare doctrine